scholarly journals Accelerators and politics in postwar Japan

2006 ◽  
Vol 36 (2) ◽  
pp. 275-296
Author(s):  
MORRIS F. LOW
Keyword(s):  
High Energy Physics ◽  
National Laboratory ◽  
High Energy ◽  
Pacific War ◽  
Accelerator Facility ◽  
Experimental Physics ◽  
Postwar Japan ◽  
Nuclear Study ◽  
The Pacific ◽  
Local Residents

ABSTRACT The destruction of Japan's cyclotrons by Occupation Forces after the Pacific War resulted in a major setback for experimental physics in that country. Key figures such as Yoshio Nishina, Sin-itirôô Tomonaga, and Ryôôkichi Sagane strived to help Japan rebuild its scientific infrastructure and regain some of its former eminence in the field, but in the wake of the dropping of the atomic bombs on Hiroshima and Nagasaki, the atom had new meaning. Local residents objected to the establishment of the Institute for Nuclear Study in Tanashi, Tokyo. Despite their protests, construction went ahead and the Institute of Nuclear Study (INS) opened in 1955. Within a few years, physicists sought to establish a second major accelerator facility. Sectionalism among physicists and shortage of funds plagued attempts to establish the National Laboratory for High Energy Physics (KEK) which eventually came into being in 1970. This paper reveals some of the problems that physicists faced and how they sought to overcome them within the context of a defeated Japan, wary of military research, and desperately seeking to rebuild its economy. Physicists sought to influence the direction of science policy and to deal with the concerns of citizens in a newly democratic Japan.

scholarly journals Status of NICA

2018 ◽  
Vol 182 ◽  
pp. 02063 ◽  
Author(s):  
Vladimir Kekelidze ◽  
Alexander Kovalenko ◽  
Richard Lednicky ◽  
Victor Matveev ◽  
Igor Meshkov ◽  
...  
Keyword(s):  
High Energy Physics ◽  
Nuclear Research ◽  
High Energy ◽  
Design Stage ◽  
Target Area ◽  
Baryonic Matter ◽  
Accelerator Facility ◽  
Polarized Protons ◽  
The Status ◽  
Under Construction

The NICA (Nuclotron-based Ion Collider fAcility) is the new international research facility under construction at the Joint Institute for Nuclear Research (JINR) in Dubna. The main targets of the facility are the following: 1) study of hot and dense baryonic matter at the energy range of the maximum baryonic density; 2) investigation of nucleon spin structure and polarization phenomena; 3) development of JINR accelerator facility for high energy physics research based on the new collider of relativistic ions from protons to gold and polarized protons and deuterons as well with the maximum collision energy of sqrt(sNN) ~11GeV (Au79+ +Au79+) and ~ 27 GeV (p+p). Two collider detector setups MPD and SPD are foreseen. The setup BM@N (Baryonic Matter at Nuclotron) is commissioned for data taken at the existing Nuclotron beam fixed target area. The MPD construction is in progress whereas the SPD is still at the beginning design stage. An average luminosity of the collider is expected at the level of 1027 cm-2 s-1 for Au (79+) and 1032 cm-2 s-1 for polarized protons at 27 GeV. The status of NICA design and construction work is briefly described below.

scholarly journals PERANG PASIFIK DI PULAU MOROTAI: Rekonstruksi Infrastruktur dan Strategi Perang

2018 ◽  
Vol 16 (1) ◽  
pp. 69
Author(s):  
Wuri Handoko ◽  
Arsthen P. Godlief ◽  
Cheviano E. Alputila
Keyword(s):  
Aerial Photographs ◽  
Historical Event ◽  
Archaeological Survey ◽  
Pacific War ◽  
Major Powers ◽  
Archaeological Data ◽  
The Pacific ◽  
The World ◽  
Local Residents ◽  
Military Archaeology

Pacific war in Morotai is an important historical event in Indonesia as well as in the world. The Pacific war involving two major powers, the Allies and Japan, left a trail of archaeological studies examined to record a very important historical event in the Pacific region of Morotai Island. Based on the concept of military archaeology, this study uses archaeological data to reconstruct infrastructure and allied strategies in combat against Japan. Investigation of these remains proceeded through studying textual and photographic records on the Allies' occupation of Morotai Island, and examination of modern-day aerial photographs of the terrain where the Allies built their infrastructure, followed by archaeological survey and through interviewing local residents to describe traces of the Pacific war infrastructure. The results explain that the preparation of good infrastructure by the allies is part of the war strategy, which determines the win for the allies against the Japanese.Perang pasifik di Morotai merupakan peristiwa sejarah yang penting di Indonesia dan juga di dunia. Perang Pasifik yang melibatkan dua kekuatan besar, Sekutu dan Jepang, meninggalkan jejak arkeologi peperangan yang dikaji untuk merekam peristiwa sejarah yang sangat penting di kawasan pasifik di Pulau Morotai. Berdasarkan konsep military archaeology, penelitian ini menggunakan data arkeologi untuk merekonstruksi infrastruktur dan strategi sekutu dalam pertempuran melawan Jepang. Investigasi arkeologi dilakukan dengan mempelajari catatan tekstual dan fotografis tentang pendudukan Pulau Morotai oleh Sekutu, dan pemeriksaan foto-foto udara modern di daerah Sekutu membangun infrastruktur, dan selanjutnya melakukan survei arkeologi dan wawancara penduduk setempat untuk menggambarkan jejak infrastrukutr perang pasifik. Hasil penelitian menjelaskan bahwa penyiapan insfrastruktur dengan baik oleh pihak sekutu merupakan bagian dari strategi perang, yang menentukan kemenangan bagi pihak sekutu dalam melawan Jepang.

scholarly journals Status of the NICA project at JINR

2018 ◽  
Vol 191 ◽  
pp. 01003 ◽  
Author(s):  
Alexander Kovalenko ◽  
Vladimir Kekelidze ◽  
Richard Lednicky ◽  
Viktor Matveev ◽  
Igor Meshkov ◽  
...  
Keyword(s):  
High Energy Physics ◽  
Nuclear Research ◽  
High Energy ◽  
Design Stage ◽  
Target Area ◽  
Baryonic Matter ◽  
Accelerator Facility ◽  
Polarized Protons ◽  
The Status ◽  
Under Construction

The NICA (Nuclotron-based Ion Collider fAcility) is the new international research facility under construction at the Joint Institute for Nuclear Research (JINR) in Dubna. The main targets of the facility are the following: 1) study of hot and dense baryonic matter at the energy range of the maximum baryonic density; 2) investigation of nucleon spin structure and polarization phenomena; 3) development of JINR accelerator facility for high energy physics research based on the new collider of relativistic ions from protons to gold and polarized protons and deuterons as well with the maximum collision energy of √SNN ~11GeV (Au79+ +Au79+) and ~ 27 GeV (p+p). Two collider detector setups MPD and SPD are foreseen. The setup BM@N (Baryonic Matter at Nuclotron) is commissioned for data taken at the existing Nuclotron beam fixed target area. The MPD construction is in progress whereas the SPD is still at the beginning design stage. An average luminosity of the collider is expected at the level of 1027 cm-2 s-1 for Au79+ and 1032 cm-2 s-1 for polarized protons at 27 GeV. The status of NICA design and construction work is briefly described below.

scholarly journals Local structures of Zr in impact-related natural glass probed by XAFS

2014 ◽  
Vol 70 (a1) ◽  
pp. C1531-C1531
Author(s):  
Tsubasa Tobase ◽  
Akira Yoshiasa ◽  
Ling Wang ◽  
Hidetomo Hongu ◽  
Tatsuya Hiratoko ◽  
...  
Keyword(s):  
Local Structure ◽  
High Energy Physics ◽  
National Laboratory ◽  
Glass Structure ◽  
Volcanic Glass ◽  
High Energy ◽  
Local Structures ◽  
Geological Processes ◽  
The Earth ◽  
Volcanic Glasses

The local structures of tektites and natural glasses were studied by Zr K-edge XANES and EXAFS in order to provide quantitative data on bonding distances and coordination numbers. The XAFS measurements were performed at the beam line BL-NW10A of the PF-AR in National Laboratory for High Energy Physics (KEK), Tsukuba, Japan. Zr4+ ion in tektite has different kinds of coordination environment. Various natural glasses are formed under different physical conditions. Impact-related glass, fulgurite and volcanic glasses are typical natural glasses. Upon a devastating impact of a giant meteoroid on the Earth, particles of the Earth's surface were melted and catapulted into outer space, where they finally solidified and fell back to the Earth. Tektites should be formed by this series of processes [1]. Tektite has special local structure of Ca[2]. Glass structure is affected by the pressure and temperature conditions during the glass formation and quenching process. This study indicated that different formation process of natural glasses gives different local structure of zirconium ions. The Zr K-edge XANES spectra of tektite have the double post-edge peaks with different heights. The volcanic glasses and other impact-related glasses such as impactite possessed more simple XANES patterns. The average coordination number of Zr4+ in darwin glass, LDG, volcanic glass and tektite are between 6 and 7. The eight-coordinated Zr4+ shows different XAFS pattern in suevite and köfelsite. All tektites are classified in same type. According to EXAFS measurements, Zr-O distances in tektites are 2.198 – 2.215Å and XANES spectra of tektites have similar shape. It indicates that tektites have similar Zr local structure with 7-fold coordination Zr ions. Impact-related glasses are classified to different types. Volcanic glasses are classified to same types. Impact glasses are formed under different geological processes at impact event and are experienced different physical environments.

International Economic Controls in Occupied Japan

1979 ◽  
Vol 38 (4) ◽  
pp. 707-719 ◽  
Author(s):  
Leon Hollerman
Keyword(s):  
International Economic ◽  
Free Market ◽  
The United States ◽  
Economic Liberalization ◽  
Pacific War ◽  
Control Laws ◽  
Postwar Japan ◽  
The Pacific ◽  
Economic Control ◽  
Government Bureaucracy

The Supreme Command for the Allied Powers (SCAP) claimed credit for bringing democracy to Japan during the Occupation. With some exceptions, the predominant result of SCAP's activities in economic (as distinguished from political) affairs, was just the opposite. SCAP imposed comprehensive economic controls on Japan and suppressed the free market system. Its intervention was especially repressive on the international plane.Prior to mobilization for the Pacific War, Japan had never had a planned or controlled economy. As the occupation drew to a close, SCAP authorized the Diet to pass legislation for international economic controls to be employed by successor peacetime governments. An extensive Japanese government bureaucracy with a vested interest in the perpetuation of economic controls took charge of their implementation. The economic control laws, and the bureaucracy to which they gave rise, constituted an important part of SCAP's legacy to postwar Japan. This legacy became a primary conditioning factor in Japan's subsequent resistance to economic liberalization—a source of continuing friction in relations between the United States and Japan.

Particle Identification in High Energy Collisions at RHIC

2005 ◽  
Vol 1 ◽  
Author(s):  
Brian T Love
Keyword(s):  
High Energy Physics ◽  
Collaborative Work ◽  
National Laboratory ◽  
Nuclear Interaction ◽  
Heavy Ion ◽  
High Energy ◽  
Brookhaven National Laboratory ◽  
Particle Identification ◽  
Theoretical Physics ◽  
Relativistic Heavy Ion Collider

This article provides a technical introduction to the study of collider physics by focusing on the concept of particle identification (PID). Through a general overview of the Relativistic Heavy Ion Collider (RHIC) and the Pioneering High Energy Nuclear Interaction Experiment (PHENIX), the author discusses the role of Vanderbilt University researchers in collaborative work at the Brookhaven National Laboratory. After explaining the concept of event reconstruction and centrality with graphical images of experimental results, the author outlines the time-of-flight method of particle identification in high energy physics. A final presentation of the design concept for the Multi-Gap Resistive Plate Chamber (MRPC) integrates the more traditional foundations of theoretical physics with the next generation of physics experimentation in the field.

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